centimeter of water (4 °C) | 1 cmH2O | 2 cmH2O | 3 cmH2O | 4 cmH2O | 5 cmH2O | 6 cmH2O | 7 cmH2O | 8 cmH2O | 9 cmH2O | 10 cmH2O | 11 cmH2O | 12 cmH2O | 13 cmH2O | 14 cmH2O | 15 cmH2O | 16 cmH2O | 17 cmH2O | 18 cmH2O | 19 cmH2O | 20 cmH2O | 21 cmH2O | 22 cmH2O | 23 cmH2O | 24 cmH2O | 25 cmH2O | 26 cmH2O | 27 cmH2O | 28 cmH2O | 29 cmH2O | 30 cmH2O | 31 cmH2O | 32 cmH2O | 33 cmH2O | 34 cmH2O | 35 cmH2O | 36 cmH2O | 37 cmH2O | 38 cmH2O | 39 cmH2O | 40 cmH2O | 41 cmH2O | 42 cmH2O | 43 cmH2O | 44 cmH2O | 45 cmH2O | 46 cmH2O | 47 cmH2O | 48 cmH2O | 49 cmH2O | 50 cmH2O | 51 cmH2O | 52 cmH2O | 53 cmH2O | 54 cmH2O | 55 cmH2O | 56 cmH2O | 57 cmH2O | 58 cmH2O | 59 cmH2O | 60 cmH2O | 61 cmH2O | 62 cmH2O | 63 cmH2O | 64 cmH2O | 65 cmH2O | 66 cmH2O | 67 cmH2O | 68 cmH2O | 69 cmH2O | 70 cmH2O | 71 cmH2O | 72 cmH2O | 73 cmH2O | 74 cmH2O | 75 cmH2O | 76 cmH2O | 77 cmH2O | 78 cmH2O | 79 cmH2O | 80 cmH2O | 81 cmH2O | 82 cmH2O | 83 cmH2O | 84 cmH2O | 85 cmH2O | 86 cmH2O | 87 cmH2O | 88 cmH2O | 89 cmH2O | 90 cmH2O | 91 cmH2O | 92 cmH2O | 93 cmH2O | 94 cmH2O | 95 cmH2O | 96 cmH2O | 97 cmH2O | 98 cmH2O | 99 cmH2O | 100 cmH2O |
kilogram-force per (square millimeter) | 9.9997246766225 × 10-6 kgf/mm2 | 1.9999449353245 × 10-5 kgf/mm2 | 2.9999174029867 × 10-5 kgf/mm2 | 3.999889870649 × 10-5 kgf/mm2 | 4.9998623383112 × 10-5 kgf/mm2 | 5.9998348059735 × 10-5 kgf/mm2 | 6.9998072736357 × 10-5 kgf/mm2 | 7.999779741298 × 10-5 kgf/mm2 | 8.9997522089602 × 10-5 kgf/mm2 | 9.9997246766225 × 10-5 kgf/mm2 | 0.0001100 kgf/mm2 | 0.0001200 kgf/mm2 | 0.0001300 kgf/mm2 | 0.0001400 kgf/mm2 | 0.0001500 kgf/mm2 | 0.0001600 kgf/mm2 | 0.0001700 kgf/mm2 | 0.0001800 kgf/mm2 | 0.0001900 kgf/mm2 | 0.0002000 kgf/mm2 | 0.0002100 kgf/mm2 | 0.0002200 kgf/mm2 | 0.0002300 kgf/mm2 | 0.0002400 kgf/mm2 | 0.0002500 kgf/mm2 | 0.0002600 kgf/mm2 | 0.0002700 kgf/mm2 | 0.0002800 kgf/mm2 | 0.0002900 kgf/mm2 | 0.0003000 kgf/mm2 | 0.0003100 kgf/mm2 | 0.0003200 kgf/mm2 | 0.0003300 kgf/mm2 | 0.0003400 kgf/mm2 | 0.0003500 kgf/mm2 | 0.0003600 kgf/mm2 | 0.0003700 kgf/mm2 | 0.0003800 kgf/mm2 | 0.0003900 kgf/mm2 | 0.0004000 kgf/mm2 | 0.0004100 kgf/mm2 | 0.0004200 kgf/mm2 | 0.0004300 kgf/mm2 | 0.0004400 kgf/mm2 | 0.0004500 kgf/mm2 | 0.0004600 kgf/mm2 | 0.0004700 kgf/mm2 | 0.0004800 kgf/mm2 | 0.0004900 kgf/mm2 | 0.0005000 kgf/mm2 | 0.0005100 kgf/mm2 | 0.0005200 kgf/mm2 | 0.0005300 kgf/mm2 | 0.0005400 kgf/mm2 | 0.0005500 kgf/mm2 | 0.0005600 kgf/mm2 | 0.0005700 kgf/mm2 | 0.0005800 kgf/mm2 | 0.0005900 kgf/mm2 | 0.0006000 kgf/mm2 | 0.0006100 kgf/mm2 | 0.0006200 kgf/mm2 | 0.0006300 kgf/mm2 | 0.0006400 kgf/mm2 | 0.0006500 kgf/mm2 | 0.0006600 kgf/mm2 | 0.0006700 kgf/mm2 | 0.0006800 kgf/mm2 | 0.0006900 kgf/mm2 | 0.0007000 kgf/mm2 | 0.0007100 kgf/mm2 | 0.0007200 kgf/mm2 | 0.0007300 kgf/mm2 | 0.0007400 kgf/mm2 | 0.0007500 kgf/mm2 | 0.0007600 kgf/mm2 | 0.0007700 kgf/mm2 | 0.0007800 kgf/mm2 | 0.0007900 kgf/mm2 | 0.0008000 kgf/mm2 | 0.0008100 kgf/mm2 | 0.0008200 kgf/mm2 | 0.0008300 kgf/mm2 | 0.0008400 kgf/mm2 | 0.0008500 kgf/mm2 | 0.0008600 kgf/mm2 | 0.0008700 kgf/mm2 | 0.0008800 kgf/mm2 | 0.0008900 kgf/mm2 | 0.0009000 kgf/mm2 | 0.0009100 kgf/mm2 | 0.0009200 kgf/mm2 | 0.0009300 kgf/mm2 | 0.0009400 kgf/mm2 | 0.0009500 kgf/mm2 | 0.0009600 kgf/mm2 | 0.0009700 kgf/mm2 | 0.0009800 kgf/mm2 | 0.0009900 kgf/mm2 | 0.0010000 kgf/mm2 |
A centimetre of water (US spelling centimeter of water, abbreviated cm H2O or cm H2O) is a less commonly used unit of pressure derived from pressure head calculations using metrology.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
centimeter of water (4 °C) | cmH2O | ≈ 999.972 kg/m3 × 1 cm × ɡ0 | ≈ 98.0638 Pa | Metric system SI |
centimeter of water (4 °C) | kilogram-force per (square millimeter) | centimeter of water (4 °C) | kilogram-force per (square millimeter) |
---|---|---|---|
1 | ≈ 9.9997246766225E-6 | 6 | ≈ 5.9998348059735E-5 |
2 | ≈ 1.9999449353245E-5 | 7 | ≈ 6.9998072736357E-5 |
3 | ≈ 2.9999174029867E-5 | 8 | ≈ 7.999779741298E-5 |
4 | ≈ 3.999889870649E-5 | 9 | ≈ 8.9997522089602E-5 |
5 | ≈ 4.9998623383112E-5 | 10 | ≈ 9.9997246766225E-5 |
A kilogram-force per square centimetre (kgf/cm2), often just kilogram per square centimetre (kg/cm2), or kilopond per square centimetre is a deprecated unit of pressure using metric units. It is not a part of the International System of Units (SI), the modern metric system. 1 kgf/cm2 equals 98.0665 kilopascals.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
kilogram-force per (square millimeter) | kgf/mm2 | ≡ 1 kgf/mm2 | = 9.80665×106 Pa | Metric system SI |
kilogram-force per (square millimeter) | centimeter of water (4 °C) | kilogram-force per (square millimeter) | centimeter of water (4 °C) |
---|---|---|---|
1 | ≈ 100002.75330958 | 6 | ≈ 600016.51985748 |
2 | ≈ 200005.50661916 | 7 | ≈ 700019.27316706 |
3 | ≈ 300008.25992874 | 8 | ≈ 800022.02647664 |
4 | ≈ 400011.01323832 | 9 | ≈ 900024.77978622 |
5 | ≈ 500013.7665479 | 10 | ≈ 1000027.5330958 |
centimeter of water (4 °C) | kilogram-force per (square millimeter) |
---|---|
1 | ≈ 9.9997246766225 × 10-6 |
100,002.7533096 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |